Invoice templates · generator · API
Create invoices in minutes — free templates, generator & API
Start from a free invoice template, fill it in a visual editor, and download a polished PDF — or automate invoicing with a simple API. No signup to start.
Free — 100 invoices/month, no credit card required.
What is InvoiceFluid?
InvoiceFluid is a free online invoice generator, invoice template library, and invoice API for creating professional invoice PDFs fast. Create a single invoice in minutes in the visual editor, or connect the API to generate invoice PDFs automatically from your app, marketplace, CRM, booking system, or no-code automation.
It's built for freelancers, contractors, agencies, small businesses, SaaS platforms, and developers who need clean, reusable invoice templates — without fighting spreadsheets or writing custom PDF code.
Three ways to invoice
Whether you need one invoice today or thousands on autopilot.
Invoice templates
Start from a free, professional invoice template — fill it in and download a PDF in minutes.
Browse templatesInvoice generator
Create an invoice online in a visual editor. Add your logo, line items, tax, and totals.
Open the generatorInvoice API
Automate invoicing at scale — send JSON, get a finished invoice PDF back. Built for developers.
See the APIHow it works
From blank to billed in three steps
- 01
Pick a template
Choose a free invoice template that fits your work — freelance, contractor, small business, and more.
- 02
Fill in your details
Add your logo, client, line items, tax, and totals in a visual editor. No spreadsheets, no formatting headaches.
- 03
Download or automate
Download a polished PDF — or connect the invoice API to generate invoices automatically from your own data.
Everything you need to create a professional invoice
- ✓ Free editable invoice templates
- ✓ Online invoice generator with live PDF preview
- ✓ Add your logo, colors, and business details
- ✓ Line items, quantities, rates, tax, discounts & totals
- ✓ Payment terms, invoice numbers, due dates & notes
- ✓ Download polished, print-ready PDFs
- ✓ Generate invoices manually or automatically via API
- ✓ 100 free invoices per month, no credit card
Popular invoice templates
Free, professional, and ready to edit.
Invoice API
Generate invoice PDFs with an API
Need invoices automatically? Send invoice data to the InvoiceFluid API and get a finished invoice PDF back — from your app, SaaS product, marketplace, CRM, checkout flow, or no-code workflow. No headless browser to run.
- ✓ Automated client invoices
- ✓ Contractor & subcontractor billing
- ✓ Marketplace seller invoices
- ✓ SaaS billing & subscription PDFs
- ✓ E-commerce order invoices
- ✓ Invoices generated from JSON data
curl -X POST https://api.invoicefluid.com/v1/invoices/{id}/render \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"data":{"client_name":"Aster & Co.","total":"$3,923.00"}}' \
--output invoice.pdfWho InvoiceFluid is for
Freelancers
Send clean, professional invoices for your projects in minutes.
Contractors
Bill for labor, materials, and hours with itemized invoices.
Agencies
Branded invoices for retainers and project work, reused every month.
Small businesses
Tax, totals, and payment terms handled — no spreadsheet math.
SaaS & marketplaces
Generate billing and seller invoices automatically via the API.
Developers & no-code
Send JSON, get an invoice PDF — no headless browser to run.
Why use InvoiceFluid?
How InvoiceFluid compares to the usual ways of making an invoice.
InvoiceFluid vs. spreadsheet templates
Spreadsheets are fine for one-off invoices, but break formatting and totals as you reuse them. InvoiceFluid gives reusable templates, automatic totals, and a clean PDF every time.
InvoiceFluid vs. Word invoice templates
Word documents drift out of alignment and export inconsistent PDFs. InvoiceFluid keeps your layout pixel-perfect across every invoice.
InvoiceFluid vs. custom HTML-to-PDF code
No headless browser or rendering servers to operate. Design the template once and call one API to generate invoice PDFs at scale.
FAQ
Frequently asked questions
Is InvoiceFluid free? +
Yes — create and download invoices free, with 100 invoices per month and no credit card. You only sign in when you want to download or keep your work.
What is an invoice generator? +
An invoice generator is a tool that turns your details — business, client, line items, tax, and totals — into a finished, professional invoice you can download as a PDF, without designing it from scratch.
What is an invoice template? +
An invoice template is a reusable, pre-designed invoice layout. You fill in the parts that change (client, items, amounts) and the design stays consistent, so every invoice looks professional.
Can I create an invoice without signing up? +
Yes. Start from any template and build your invoice right away — you only create a free account when you want to download or save it.
Can I download the invoice as a PDF? +
Yes — invoices download as print-ready PDFs that look the same everywhere, ready to email to a client or keep for your records.
Can I add tax, discounts, and payment terms? +
Yes. Add tax rates, discounts, multiple line items, payment terms, due dates, and notes — totals are calculated for you.
Can developers generate invoices with an API? +
Yes. Design an invoice template once, then send JSON to the invoice API and get a finished invoice PDF back — generate one invoice or thousands. See the invoice API
What is the difference between the invoice generator and the invoice API? +
The generator is for creating invoices by hand in your browser. The API is for generating invoices automatically from your own app or workflow. Both use the same templates.
Make your first invoice free
Pick a template, fill it in, and download a polished invoice in minutes. 100 invoices/month free — no credit card.
Create an invoice free